linux-kernel - Re: [PATCH] 3/3 maple: update bus driver to support Dreamcast VMU

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20080324160429.GG2899@logfs.org>
Date:	Mon, 24 Mar 2008 17:04:30 +0100
From:	Jörn Engel <joern@...fs.org>
To:	Adrian McMenamin <adrian@...golddream.dyndns.info>
Cc:	Paul Mundt <lethal@...ux-sh.org>, Greg KH <greg@...ah.com>,
	dwmw2 <dwmw2@...radead.org>, LKML <linux-kernel@...r.kernel.org>,
	MTD <linux-mtd@...ts.infradead.org>,
	linux-sh <linux-sh@...r.kernel.org>,
	Andrew Morton <akpm@...l.org>
Subject: Re: [PATCH] 3/3 maple: update bus driver to support Dreamcast VMU

On Mon, 24 March 2008 15:51:40 +0000, Adrian McMenamin wrote:
> On Mon, 2008-03-24 at 16:29 +0100, Jörn Engel wrote:
> > On Mon, 24 March 2008 15:06:18 +0000, Adrian McMenamin wrote:
> > > 
> > > I don't think I have any alternative here. The problem is that the bus
> > > checks periodically (every HZ ticks but that could be changed) if a
> > > device remains connected to the system by queueing a status command. (If
> > > the status command is replied to with a "No response" then that
> > > indicates to the bus that the device has been removed.
> > 
> > Where does this queueing happen?  Somewhere in the kernel where we can
> > control it or in hardware?
> 
> Well, the queuing of the status command is under software control.

Then we should be fine.  I'll try to beat the code into submission.

Jörn

-- 
Joern's library part 7:
http://www.usenix.org/publications/library/proceedings/neworl/full_papers/mckusick.a
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/